A geologic reconnaissance in the Gulf Coastal Plain of Texas near the Rio Grande/New species of mollusca from the Eocene deposits of southwestern Texas

1923 ◽  
pp. 85-131
Author(s):  
A.C. Trownbridge ◽  
Julia Gardner
Keyword(s):  
New Species ◽  
Coastal Plain ◽  
Rio Grande ◽  
Gulf Coastal Plain

Three new species of Hyalella (Crustacea: Amphipoda: Hyalellidae) from the Southern Brazilian Coastal Plain

Zootaxa ◽  
2021 ◽  
Vol 4970 (2) ◽  
pp. 257-292
Author(s):  
JORDAN TUPARAI TALHAFERRO ◽  
ALESSANDRA ANGÉLICA DE PÁDUA BUENO ◽  
MATEUS MARQUES PIRES ◽  
CRISTINA STENERT ◽  
LEONARDO MALTCHIK ◽  
...  
Keyword(s):  
New Species ◽  
Body Surface ◽  
Coastal Plain ◽  
Rio Grande ◽  
Plumose Seta ◽  
The State ◽  
Rio Grande Do Sul ◽  
Santa Catarina ◽  
Smooth Body ◽  
Three New Species

In this study, three new species of Hyalella (Crustacea: Amphipoda: Hyalellidae) are described based on specimens collected in wetlands located in three freshwater ecoregions (Southeastern Mata Atlântica, Tramandaí-Mampituba and Laguna dos Patos) of the southern Brazilian Coastal Plain (states of Rio Grande do Sul and Santa Catarina). Hyalella minuana n. sp. was recorded in the southernmost region of the state of Rio Grande do Sul. This species is characterized by presenting smooth body surface, epimeral plates not acuminated, nine serrate setae on the inner face of gnathopod 1, and peduncle of uropod 3 with four cuspidate setae with accessory seta and without plumose seta on the margin of the telson. Hyalella lagoana n. sp. was recorded in the northern region of Rio Grande do Sul and southern region of Santa Catarina. This species shows body surface smooth, epimeral plates not acuminated, nine serrate setae on the inner face of gnathopod 1, peduncle of uropod 3 with five cuspidate setae with accessory seta, and telson with six cuspidate setae with accessory seta without plumose seta on the margins. Hyalella sambaqui n. sp. was recorded in the state of Santa Catarina. This species is characterized by presenting smooth body surface, epimeral plates not acuminated, six serrate setae on the inner face of gnathopod 1, peduncle of uropod 3 with three cuspidate setae with accessory seta, and telson with three cuspidate setae with accessory seta and four plumose setae on the margin of the telson.                The new records elevates the known diversity of species of Hyalella in the Brazilian territory to 33 species (19 in the southern Brazilian region) and to 83 species in the Americas. 

Late Santonian megaspore floras from the Gulf Coastal Plain (Georgia, USA)

2011 ◽  
Vol 85 (1) ◽  
pp. 1-21 ◽  
Author(s):  
Richard Lupia
Keyword(s):  
New Species ◽  
North America ◽  
Late Cretaceous ◽  
Coastal Plain ◽  
Eastern North America ◽  
Gulf Coastal Plain ◽  
Two New Species ◽  
Western Interior Basin ◽  
Heterosporous Ferns

Fossil megaspore floras from the Late Cretaceous of North America have been studied extensively, but primarily from the Western Interior Basin. Two new megaspore floras are described from eastern North America along the Gulf Coastal Plain. Cumulatively, 10 genera and 16 species of megaspores are recognized from Allon, Georgia and along Upatoi Creek, Georgia (both late Santonian in age, ~84 Ma). Megaspores identified have affinities to both heterosporous lycopsids, e.g., Erlansonisporites, Minerisporites, and Paxillitriletes, and to heterosporous ferns, e.g., Ariadnaesporites, and Molaspora. Lycopsid megaspores are more diverse than fern megaspores in the Allon and the Upatoi Creek floras. Two new species—Erlansonisporites confundus n. sp. and Erlansonisporites potens n. sp.—are proposed.

scholarly journals A late-surviving apatemyid (Mammalia: Apatotheria) from the latest Oligocene of Florida, USA

PeerJ ◽  
2015 ◽  
Vol 3 ◽  
pp. e1509 ◽  
Author(s):  
Nicholas J. Czaplewski ◽  
Gary S. Morgan
Keyword(s):  
New Species ◽  
North America ◽  
Coastal Plain ◽  
Eastern North America ◽  
Gulf Coastal Plain ◽  
Early Oligocene ◽  
Alachua County ◽  
The Family ◽  
Distal Edge ◽  
A New Species

A new species of Apatemyidae,Sinclairella simplicidens, is based on four isolated teeth that were screenwashed from fissure fillings at the late Oligocene Buda locality, Alachua County, Florida. Compared to its only congenerSinclairella dakotensis, the new species is characterized by upper molars with more simplified crowns, with the near absence of labial shelves and stylar cusps except for a strong parastyle on M1, loss of paracrista and paraconule on M2 (paraconule retained but weak on M1), lack of anterior cingulum on M1–M3, straighter centrocristae, smaller hypocone on M1 and M2, larger hypocone on M3, distal edge of M2 continuous from hypocone to postmetacrista supporting a large posterior basin, and with different tooth proportions in which M2 is the smallest rather than the largest molar in the toothrow. The relatively rare and poorly-known family Apatemyidae has a long temporal range in North America from the late Paleocene (early Tiffanian) to early Oligocene (early Arikareean). The new species from Florida significantly extends this temporal range by roughly 5 Ma to the end of the Paleogene near the Oligocene-Miocene boundary (from early Arikareean, Ar1, to late Arikareean, Ar3), and greatly extends the geographic range of the family into eastern North America some 10° of latitude farther south and 20° of longitude farther east (about 2,200 km farther southeast) than previously known. This late occurrence probably represents a retreat of this subtropically adapted family into the Gulf Coastal Plain subtropical province at the end of the Paleogene and perhaps the end of the apatemyid lineage in North America.

New Ostracoda species from an Upper Cretaceous oyster reef, northern Gulf Coastal Plain, U.S.A.

1994 ◽  
Vol 68 (6) ◽  
pp. 1321-1335 ◽  
Author(s):  
T. Markham Puckett
Keyword(s):  
New Species ◽  
Late Cretaceous ◽  
Coastal Plain ◽  
Upper Cretaceous ◽  
Oyster Reef ◽  
Oyster Reefs ◽  
Total Thickness ◽  
Topographic Feature ◽  
Gulf Coastal Plain ◽  
Eutaw Formation

This paper describes new species of Ostracoda from Late Cretaceous (late Santonian) oyster reefs of the Eutaw Formation of eastern Alabama. The reefs are composed almost exclusively of Ostrea cretacea Morton, with rarer occurrences of the oysters Exogyra upatoiensis Stephenson and Lopha ucheensis (Stephenson) and the bivalve Anomia preolmstedi Stephenson. Total thickness of the reefs is about 30 m, and the reefs are a major topographic feature across most of Macon and Russell Counties, Alabama, a distance of about 60 km. The reefs are interpreted to have been backbarrier sediments deposited under brackish conditions.Eight species of ostracodes are identified, including five new species described herein. The fauna is typically well preserved, and includes males, females, and juveniles. New species include Haplocytheridea? eutawensis, Antibythocypris dimorphicus, A. nephotrema, Brachycythere asymmetrica, and Eocytheropteron mutafoveata. Also discussed and illustrated are Cytherella tuberculifera Alexander, Haplocytheridea renfroensis renfroensis Crane, and Fissocarinocythere gapensis (Alexander).

Miocene rhinoceroses from the Texas Gulf Coastal Plain

1987 ◽  
Vol 61 (2) ◽  
pp. 388-423 ◽  
Author(s):  
Donald R. Prothero ◽  
Earl M. Manning
Keyword(s):  
New Species ◽  
North America ◽  
Coastal Plain ◽  
Middle Miocene ◽  
Early Miocene ◽  
High Plains ◽  
Gulf Coastal Plain ◽  
Local Fauna ◽  
Southeast Texas ◽  
A New Species

Four species of rhinoceros occur together in the Barstovian (middle Miocene) faunas of southeast Texas, a unique situation in the Miocene of North America. Two are assigned to normal contemporary High Plains species of Aphelops and Teleoceras, and two to dwarf species of Peraceras and Teleoceras. The dwarf Peraceras is a new species, P. hessei. The dwarf Teleoceras is assigned to Leidy's (1865) species “Rhinoceros” meridianus, previously referred to Aphelops. “Aphelops” profectus is here reassigned to Peraceras.The late Arikareean (early Miocene) Derrick Farm rhino, erroneously referred to “Caenopus premitis” by Wood and Wood (1937), is here referred to Menoceras arikarense. Menoceras barbouri is reported from the early Hemingfordian (early Miocene) Garvin Gully local fauna of southeast Texas. The rhinos from the early Clarendonian Lapara Creek Fauna are tentatively referred to Teleoceras cf. major.The three common genera of middle late Miocene rhinoceroses of North America (Aphelops, Peraceras, Teleoceras) are rediagnosed. Aphelops and Peraceras are more closely related to the Eurasian Aceratherium and Chilotherium (all four together forming the Aceratheriinae) than they are to the American Teleoceras. Contrary to Heissig (1973), Teleoceras is more closely related to the living rhinoceroses and their kin (together forming the Rhinocerotini) than it is to the Aceratheriinae.

scholarly journals A new species and notes on Baccharis sect. Caulopterae (Asteraceae) from Brazil

Rodriguésia ◽  
2010 ◽  
Vol 61 (1) ◽  
pp. 73-76
Author(s):  
Angelo Alberto Schneider ◽  
Gustavo Heiden ◽  
Ilsi Iob Boldrini
Keyword(s):  
New Species ◽  
Coastal Plain ◽  
Related Species ◽  
Sandy Soils ◽  
Rio Grande ◽  
Rio Grande Do Sul ◽  
Closely Related Species ◽  
New Synonyms ◽  
A New Species

Abstract A new species of Baccharis L. sect. Caulopterae DC.(Asteraceae) from sandy soils and dunes on the coastal plain of Rio Grande do Sul state, Brazil, is presented: Baccharis dunensis A.A.Schneid. & G.Heiden. The new species is described, illustrated and compared to more closely related species. Additionally, B. burchelli Baker is reinstated, new synonyms are proposed for B. burchellii and B. crispa Spreng., and a lectotype is designated for B. regnellii Sch.Bip. ex Baker.

A new species of dusky salamander (Amphibia: Plethodontidae: Desmognathus) from the Eastern Gulf Coastal Plain of the United States and a redescription of D. auriculatus

Zootaxa ◽  
2017 ◽  
Vol 4263 (3) ◽  
Author(s):  
D. BRUCE MEANS ◽  
JENNIFER Y. LAMB ◽  
JOSEPH BERNARDO
Keyword(s):  
New Species ◽  
Coastal Plain ◽  
Molecular Genetic ◽  
The United States ◽  
Large River ◽  
Atlantic Coastal Plain ◽  
Gulf Coastal Plain ◽  
Plethodontid Salamander ◽  
Molecular Genetic Data ◽  
A New Species

The Coastal Plain of the southeastern U. S. is one of the planet’s top biodiversity hotspots and yet many taxa have not been adequately studied. The plethodontid salamander, Desmognathus auriculatus, was originally thought to occur from east Texas to Virginia, a range spanning dozens of interfluves and large river systems. Beamer and Lamb (2008) found five independent mitochondrial lineages of what has been called D. auriculatus in the Atlantic Coastal Plain, but did not examine the extensive distribution of D. auriculatus in the Gulf Coastal Plain. We present morphological and molecular genetic data distinguishing two evolutionarily independent and distantly related lineages that are currently subsumed under the taxon D. auriculatus in the eastern Gulf Coastal Plain. We describe one of these as a new species, Desmognathus valentinei sp. nov., and assign the second one to D. auriculatus which we formally redescribe.

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